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Why did Hubble's data change our view of the universe?
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Why did Hubble's data change our view of the universe?

User Rafael Barros
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Hubble has helped survey galaxies that existed when the universe was only 600 million years old. Previous estimates had suggested that galaxies didn't form until the universe was at least two billion years old. The instrument's images have helped scientists understand how galaxies evolve.

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User Psycho Punch
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